This category is where any user support questions should be filed. Anything related to getting help using the toolkit is relevant---examples include getting the toolkit compiled on your machine, reporting bugs you've encountered, configuration questions, etc.
Discussion about this site, its organization, how it works, and how we can improve it. Note that this is not "MeTA", but a discussion on the website about the website.
This category contains all discussion surrounding the current development work on the toolkit: examples include RFC-style discussions around feature design, issues encountered while adding a feature, design decisions, release planning, etc.
This category contains community-written documentation about MeTA. Posts here are encouraged to be wikis that discuss how to accomplish certain tasks in using the toolkit.